Locomotive driving box



C.J.MELUN LocoMoTIvE DRvING Box Oct- 20, 1925.

Filed Feb. 11. 1924 2 Sheets-Sheet 1 IN E TOR f Oct. 20, l925 1,558,034

c. J. MELUN LOCOMOTIVE DRIVING BOX Filed Feb. 11. 1924 2 Sheets-Sheet 2 w3 da Patented Get. 20, 1925.

UNITED STATE 1,558,034 earner orties.

CARL J. MELLIN, OF SCHENECTADY, NEW YGRK; THE SCI-{ENECTAD'Y TRUST COMPANY EXECUTOR- F SAID CARL d, VELLIN, DECEASED.

LOCOTOTIVE DREVNG BSK.

Application led February 11, 1924. Serial No. 691,873.

To @ZZ whom t may] concern Be it known that CARL il. Mannini, a citizen of the United States, and a resident of Schenectady, in the county of Schenectady and State of New York, have invented a certain new and useful mproven'ient in Locomotive Driving Boxes,rof which iniproreinent the following a specificatir'm, My imf'ention relates, particularly, to the journal bearings of loconiotive driving boxes, and its object is to provide additional bearing surfaces, located below the horizontal plane through the axis .of the driving axle, in order to mor-e nearly equalize the projected bearing surface resisting the thrust of the piston, and a lubricant conn taining cellar, having` the capacity of removal without disturbing the supplemental bearing members. A further object is to provide such additional bearing surface members, with adjusting means, operable while the bearing is in place on the axle and so constructed and disposed as to wedge the lubricant cellar in position to form a strut at the bottoni of the box, which will. obviate any tendency of the side walls of the box to close in on, or cramp, the axle, by reason of excess of load or heating` due to journal friction. 3 The improvement claimed is hereinafter fully set forth.

ln the accompanying drawings: Figure l a front view, in elevation, of a locomotive driving box embodying my invention; Fig.

a vertical longitudinal. central section through the same; Fig. 3, a view, in pei'- spective, of one of the securing bolts; Fig. a similar View of one of the supplemental bearings; Fig. 5, a similar view of a wedge strip, fitted in the cellar to engage the supplemental bearing; Fig. G, a perspective 'iew of the cellar; Fig. 7, a partial view. similar to Fig. l. illustrating a structural modification of the means for supjiiorting the. cellar; and, Fig. 8, a partial view, similar to Fig. 2, of the same.

In the practice of my invention, referring descriptively to the specific embodiment thereof which is herein exemplified, the a@ driving box, l, is fitted with a crown brass, l, in the usual manner, and Vert-ical faces, l", are machined upon it for the contact of the lateral supplemental bearings, 2. Said bearings, which are most clearly shown .in Fig. al, have concave bearing faces, 2a, at

their tops, curved to conform to the axle journal on which the driving box is to be placed, and are fitted between the faces, lb, of the driving box, and the vertically machined side faces, 3, ofthe lubricant cellar` Ii. At the top of eaehof the machined sures, lb, an inwardly and downwardly inclined shoulder, l, is formed in the box, against which shoulder the correspondingly beveled top surface, 2b, of the supplemental bearing, 2, fits, and in each of said surfaces, ib, is bored a circular recess, l, for the reception of the rounded head, de, ofan adjusting bolt, d. Thestems of said bolts extend through apertured lugs, 2C, formed on the back of the bearings, 2, at the bottom, as shown in F ig. 4, and are threaded for the reception of nuts, which bear against the underside of the lugs, 2, as best shown in F l. The bolts, ai, also extend through apertured lugs, 3b, on the lubricant cellar, '3, and carry nuts, 7, bearing against the under` side of said lugs, and secured in place b y lock nuts, 8. One or more spacing washers, il, may be interposed between the top of the lugs, 8, and the nuts, 5, and, as the journal wears upward int-o the crown bearing, and, consequently, the contact between the journal and the supplemental bearings is lost, the inclined shoulders, 1c, may be trimmed off, to permit said bearings to be drawn up higher in the box.

One of the sides ofthe cellar, 3, is provided with a longitudinal groove, 3, on the upper part of which there is formed an outwardly and upwardly inclined face, 3. In this groove, there is 9, on the upper portion of the inner side of which there is formed a curved face, 9a, to fit against the inclined face, 3d, of the groove.

The bottom of the wedge strip, 9, is groovedA near its ends to receive'the ends of set screws, l0, carrying lockl nuts, 10, bearing against the undersides of the adjacent lugs, 3b, of the lubricant cellar. By tightening up the set screws, l0, the wedge strip, '9, is forced upwardly and at the same time laterally, as will be obvious, pressing the adjacent supplemental bea-ring directly against the adjacent face, lb, of the box, and the supplemental bearing 0n the other side, through the cellar, against the other face, 1b, of the box. This lateral pressure on the supplemental bearings acts to force the bottom walls of the driving box apart, and reseated a wedge strip Cil sists any tendency of said walls to close in on the journal.

As the journal wears upwardly` into the crown brass, contact between the supplemental bearings and the journal is eliminated, but may be restored by removing: metal from the upper bevelled taces, 2b, of the supplemental bearings, thus permitting them to be drawn higher up in the box, at the same time making such corresponding; adjustment of the thickness oit the spacing washers as may become necessary.

As shown in Figs. and 8, which illustrate a structural modification ot the means for supporting the cellar, the lugs, 3b, are omitted, and in their place the cellar is provided with short downwardly extending lugs, 3e, grooved at their bottom to tit over the upper edge of a pair of keys, (l, which are passed through slots formed in the lower ends of the bolts, el, and are-secured in place by cotter pins, (in.

lt will be seen that my inif'ention is readily applicable, at comparatively slight cost, in connection with dr' 'ing boxes or" the present standard construction, and also that it attains, in practice, the important advantage ot enablingany and all adjustments to be etlected while the axle in place, and, when adjusted, obvlates tendency to cramp or bind the axle. It will also be seen that the removal and replacement ot he lubricant cellar may be eliected, as desired, without interference with the supplemental bearings.

I claim as my invention and desire to secure by Letters Patent:

l. The combination of a locomotive drivingbox; a crown brass therein; supplemental bearings, slidable on the vertical inner faces of the driving box, below its horizontal axial plane; and adjusting` means, comprising bolts, the heads of which are seated in recesses in the said faces of the box, and the bodies o'j which pass' through outwardly projecting lugs on the sides of the supplemental bearings.

2. The combination ol a locomotive driving box; a crown brass therein; Vertical machined inner recessed faces on the driv` ingbox, below the crown brass; inwardly projecting shoulders at the tops ot said faces; supplen'iental bearings, slidable on said faces, and adapted to engage said shoulders; and means held in said recesses and engaging lugs on said supplemental bearings for adjusting the same vertically.

3. The combination of a locomotive driving box; a crown brass therein; supplemental bearings, slidable on the vertical inner faces of' the drivingl box below horizontal axial plane; means 'lor adjusting;` said supplemental bearings to tal-ze up wear; a lubricant cellar, having vertical sides, fitting` between said supplemental bearings; a wedge strip litted in a `groove in one side ot' the cellar and bearingl against the adjacent supplemental bearing; and means yir actuating` said wedge strip to exert. opp t pressure on the cellar and .said supplemcnta bearings.

4. The combination oit a locomotive driving` box; a. crown brass therein; la eral rertically slidablc supplemental bmi-ings` adapted to engage the journal below its axis; a lubricant cellar. litted between said supplemental bearings; a wedge strip, seated in a horizontal groove, on one side of the cellar, hafinfbil an inclined inner face. and bearing against the adjacent supplemental bearing; and a set screw tor 'forcing` said wedge strip upwardly and outwardly, whereby closing in oi? the lower sides ot the drivingv box is prevented.

The combination ot' a locomotive driving` box; a crown brass therein; plates, the upper parts ot which constitute supplemental bearings for the lower part oi the journal, and which are slidably fitted on thc inner vertical faces of the driving box side walls; lugs on the lower ends ot said snpplemental bearings; bolts, held in the driving` box side walls, and passed through said lugs, the lower ends ot said bolts being slotted', keys, passing; through the slots olf the bolts; a lubricant cellar, supported by said keys; means for adjusting` the supplemental bearings vertically; and means, coacting with the cellar', for pressing,i the supplemental bearings against the inner faces o'l the driving boX.

CARL J. WELLIN. 

